Walter steel



(No Model.)

w. STEEL. MACHINE FOR ROUNDING, STRAIGHTBNING, AND PLANISHING METALBARS.

No. 491,668. Patented Feb. 14, 1893.

avwamtoz 1/4 attoznm UNITED STATES PATENT Qrrrcn.

VALTER STEEL, OF READING, PENNSYLVANIA.

MACHINE FOR ROUNDING, STRAIGHTENING, AND PLANISHING METAL BARS.

SPECIFICATION forming part of Letters Patent No. 491,668, dated February14, 1893.

Application filed June 13, 1892. Serial No. 436,504- (No model.)

T0 at whom it may concern.-

Be it known that I, \VALTER STEEL, a citizen of the United States,residing at Reading, in the county of Berks, State of Pennsylvania, haveinvented certain Improvements in Machines for Rounding, Straightening,and Planishing Metal Bars, of which the-follow' ing is a specification.

My invention relates particularly to the manufacture of round bars ofmetal and has for its complete object the perfecting of the rough-rolledmetal byasingle continuous and automatic operation in which the perfectrounding and straightening of the bar and the planishing of its surfacewill be simultaneously effected. Heretofore a variety of mechanisms havebeen devised for accomplishing these effects, but in no case so far as Iam aware, have they been effected in the manner which I am about todescribe in connection with the accompanying drawings.

The novel features of the invention are specifically set outin theclaims.

Figure 1 is an end elevation and Fig. 2 a plan view of a simple form ofmachine embodying the essential features of my invention.

A and A represent housings in which are mounted two rolls B and O. Theroll 0 as shown is somewhat smaller in diameter than the roll B andturns in fixed bearings E, its axis being in horizontal position and atright angles to the bearings. The roll B as already stated has asomewhat greater diameter than C and is mounted in bearings D which areadjustable laterally by means, of a screw F and to a more limited extentvertically by means of a clamping screw G and suitable liners. Thesebearings D in the housings A and A, being separately adjustable, permitthe axis of the roll 13 to be readily set to varying angles both invertical and horizontal planes with the roll 0, as well as at differentdistances from it the vertical adjustment being provided for in theconstruction illustrated by placing liners of different thickness underthe bearing D.

I will proceed to describethe relative position of the rolls essentialto the complete operation of my machine after first referring more,particularly to the character of the operation which it is intended toperform.

H represents a round rod of metal which after having been rolled toshapein the ordinary manner is being subjected in my machine to asimultaneous rounding, straighten-- ing, and planishing action whilebeing automatically fed onward. The line of outward movement of the baris exactly parallel with the roll 0 and is maintained in constantcontact with its surface through substantially the whole length of theroll by the joint action of the two rotating rolls, and the planishingtool K, which latter is located between the rolls and below the rod H.Both the rolls B and C are positively rotated in the same direction asindicated by the arrows by any suitable mechanism not shown and whenthey are of the relative sizes indicated in the drawings where B is oflarger diameter than C may make the same number of revolutions, thegreater diameter of the roller 13 causing it to have a greater surfacespeed than C.

The planishing tool K is preferably so arranged that its upper surfacekwhich is perfectly smooth and hard, will be in contact with the surfaceof the round rod H when the center of the latter is slightly below thecenter of the roll 0. The roll Bis set out of parallel with the roll 0,its axis being inclined so as to keep the entering end, which is markedX in Fig. 2, a sufficient distance from the roll 0 to permit the rod Hto be readily entered between the rolls, while the forward end Y presseshard against the rod; at the same time the forward end Y is raisedhigher than the entering end X so that its center is above thejcenterlineZ Z which passes through the center of the rod. The relativepositions of the center of the rollB at opposite ends X Y is indicatedin exaggerated degree in Fig. 1 at Z) and h respectively.

The effect of the arrangement of parts just described is that when themachine is in operation and a bar H is entered between the rolls at X,it is subjected to rotary pressure between their surfaces and is atoncerotated with them. The surface speed of the roll B being in excess of Gowing to the fact already stated that it is of greater diameter whilearranged to make the same number of revolutions tends constantly topress the rod down upon the smooth surface 70 of the planishing tool K,with the whole length of which as well as of the roll Cit is heldclosein contact while it is being rapidly rotated. At the same time alsoan endwise strain tending to automatically feed the roll forward isproduced owing to the inclination of the roll B which causes thatportion of its surface which is in contact with the rod H to moveslightly forward in rotating around its own axis.

It will thus be noticed that the following effects are simultaneouslyand automatically produced upon the rod operated on:-first it is pressedfirmly between the surfaces of the rotating rolls and the tool K;secondly it is rapidly rotated with the rolls; thirdly its rotatingsurface is pressed against the fixed tool K and subjected to acontinuous planishing action; and fourthly itis continuously fed onward.The joint effect of these simultaneous actions is that the bar isperfectly rounded to a uniform diameter, all kinds of bends arestraightened out, and the surface is hardened and planished; the wholelength of the bar being automatically acted upon.

While my machine is more especially adapted for operating uponcontinuous lengths of round bars it is obvious that it may be arrangedto operate upon short lengths which need not be fed onward, bydispensing with theincline of the roll B as described. I have lndlcateda simple arrangement of the planishing tool which may advantageously bemodified so as to providein any ordinary manner for convenientadjustment for height. In practice other details of construction andarrangement 'will be readily modified by an expert and I do nottherefore limit myself to the exact construction and arrangementindicated, but:

What I claim is:

1. The combination with the rolls B and 0 arranged to positively rotatein the same direction of the tool K located between said rolls and belowtheir axes, the periphery of the roll B having a downward movement nearthe tool K and a greater speed than the upwardly moving adjacentperiphery of the roll 0, substantially as set forth.

2. The combination with the roll 0 having its axis arranged parallelwith the movement of the bar under treatment of the roll B having itsaxis inclined to that of the roll 0, and the tool K arranged to operatein connection with the rolls, said rolls being positively rotated in thesame directions with different surface speeds, whereby said bar issimultaneously pressed against said tool and fed onward, substantiallyas set forth.

In testimony whereof I affix mysignature in presence of two witnesses.

WALTER STEEL. lVitnesses:

E1). A. KELLY, W. G. STEWART.

